USN-2440-1: Mutt vulnerability

Releases

• Ubuntu 14.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04
• Ubuntu 10.04

Packages

• mutt - text-based mailreader supporting MIME, GPG, PGP and threading

Details

Jakub Wilk discovered that the write_one_header function in mutt
did not properly handle newline characters at the beginning of a
header. An attacker could specially craft an email to cause mutt to
crash, resulting in a denial of service.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.10

• mutt - 1.5.23-1.1ubuntu0.2
• mutt-patched - 1.5.23-1.1ubuntu0.2

Ubuntu 14.04

• mutt - 1.5.21-6.4ubuntu2.1
• mutt-patched - 1.5.21-6.4ubuntu2.1

Ubuntu 12.04

• mutt - 1.5.21-5ubuntu2.2
• mutt-patched - 1.5.21-5ubuntu2.2

Ubuntu 10.04

• mutt - 1.5.20-7ubuntu1.3
• mutt-patched - 1.5.20-7ubuntu1.3

After a standard system update you need to restart any running
instances of mutt to make all the necessary changes.

References

• CVE-2014-9116